I think it means they’re less likely to be able to identify that the ID photo is the same person as the one standing in front of them. It’s the other-race effect, which I understand is quite natural for people of all races that have less experience with other races.
The project could be “hottest/most destructive fart”. If it is, I would like to see the white paper.
Edit: my thinking being that the chairs would be a fairly consistent medium to test against